Kain Posted June 28, 2012 Share Posted June 28, 2012 On the Sunfire Web site, the TGA-7401 is spec'd to 120 amps of current per channel while weighing 46 lbs. I had an e-mail discussion with Parasound regarding their NewClassic 5250 v.2 and asked them how it was possible for the Sunfire to have so much more current than the Parasound while weighing so much less. They said that they would have to "question" the Sunfire's specs on current by weight is part of the equation when it comes to current. For reference, the Parasound Halo A51 has 60 amps of current per channel while weighing 80 pounds. The Sunfire TGA-7401 has double the current capability while weighing about half as much. Are Sunfire's specs accurate or is something up? I am sure Parasound's input on this matter would be bias so I am looking for an unbiased point-of-view. Quote Link to comment Share on other sites More sharing options...
IndyKlipschFan Posted June 28, 2012 Share Posted June 28, 2012 The sunfire will power anything you need.. It is designed a different way so it does not have to be 10000000 lbs and waste heat! Quote Link to comment Share on other sites More sharing options...
travis-g Posted June 28, 2012 Share Posted June 28, 2012 I currently own a Sunfire Signature edition amp which is rated at 425x5 I love this amp and have never wanted for more power Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted June 29, 2012 Share Posted June 29, 2012 Sunfire makes some very nice amps.The 7's will never see the full power of that amp.Travis-g, I was looking at your signature and seen the RC 64, how do you like it with the RF 7's? I just purchased an RC 64. Quote Link to comment Share on other sites More sharing options...
Guest " " Posted June 29, 2012 Share Posted June 29, 2012 there are a few different issues here.....are we talking peak current or continuous current. for peak current, we are influenced by total capacitance and the impedance of all the output stages in parallel. the incremental weight of double the capacitance and double the output stages is small. http://cbasso.pagesperso-orange.fr/Downloads/Papers/bulk%20capacitor%20calculations.pdf for continuos current....now we are talking major weight differences. significantly larger and significantly heavier transformers are needed to double current in addition to the above mentioned capacitor and parallel output stage considerations. so, in our 120amp light amp vs the 60 amp heavier amp, it may be the case that the lighter amp is using a peak current rating and the heavier amp is using a continuos current rating. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted June 29, 2012 Share Posted June 29, 2012 What is the class of the Sunfire amp, G/H or D. I could not find it on the product page. Quote Link to comment Share on other sites More sharing options...
tmassey Posted June 29, 2012 Share Posted June 29, 2012 Nice on your RC-64! How do you like it so far derrick? Didn't you have an icon series one before? I know I was blown away by it going from a 62, I think your upgrade would have been on entire new level if you previously had the icon one. To the OP, check out Behringer A500 It's got a pretty high distortion. It's a 2 channel amp that claims 160 watts per channel at 8 ohms, but it weighs about 18.5 lbs. Quote Link to comment Share on other sites More sharing options...
prerich Posted June 29, 2012 Share Posted June 29, 2012 It's the downtracking converter technology that Bob Carver invented. That's why it can draw so much current but be lite in weight. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted June 30, 2012 Share Posted June 30, 2012 Just waiting for the delivery on the RC 64. Next, I am joining AA, Audioholics Anonymus, this upgrade thing is addictive, lol. Quote Link to comment Share on other sites More sharing options...
tmassey Posted June 30, 2012 Share Posted June 30, 2012 Haha! All because you decided one day that you would like a pair of rf-7s. Its exactly what i did when i seen an ad for some 83s. For me, its finally getting to a point where i feel like i should start thinking about a new tv and not so much audio. I just need an xpa-2 and a pair of rb-62s and i really hope ill be done wanting upgrades for 20 years or decide i need to have a 2 channel setup. Quote Link to comment Share on other sites More sharing options...
Utard Posted June 30, 2012 Share Posted June 30, 2012 If it was 120 amps at the speaker wires you would be dead if you touched the wires? What does it take something like 1/4 amp to stop the heart? Its watts not amps. Quote Link to comment Share on other sites More sharing options...
Moderators dtel Posted June 30, 2012 Moderators Share Posted June 30, 2012 Its watts not amps. That's what I was thinking but it's way over 120 WPC. What I don't get is one 110V wall outlet say at 20 amps max producing 120 amps X 7. Why don't we just get a couple of these and up the power from a few 110v- 20 amp lines to power the whole house ? 7 X 120 amps = 840 amps X 2 is more than a normal house uses. I know that max output, but even half of that is still putting out way more power than it's using. Some one please correct me, I must be misunderstanding something ? Quote Link to comment Share on other sites More sharing options...
travis-g Posted July 1, 2012 Share Posted July 1, 2012 I love my RC-64. I went through several different center channel speakers before finding the holy grail. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted July 1, 2012 Share Posted July 1, 2012 That is really great to hear Travis. I was told by Klipsch that it should timber match with the 7's and 7II's. Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted July 2, 2012 Share Posted July 2, 2012 Its watts not amps. That's what I was thinking but it's way over 120 WPC. What I don't get is one 110V wall outlet say at 20 amps max producing 120 amps X 7. Why don't we just get a couple of these and up the power from a few 110v- 20 amp lines to power the whole house ? 7 X 120 amps = 840 amps X 2 is more than a normal house uses. I know that max output, but even half of that is still putting out way more power than it's using. Some one please correct me, I must be misunderstanding something ? Thank you. I was thinking the same thing, picturing the speakers frying. Most homes have 100 or 200 amp service. Quote Link to comment Share on other sites More sharing options...
MikeFord Posted July 3, 2012 Share Posted July 3, 2012 Wall outlet is normally 15 amps at 120 vac, some are rated higher at 20 amps, but 15 is typical. That is about 1500 watts, and no amp is 100% efficient so maybe 1000 to 1200 watts out of an amp is possible continuously. Marketing doesn't like being limited by reality, so they don't specify time, which might be milliseconds at whatever watts or amps they claim. I'm not sure anything other than rms continuous power has much meaning. I do agree the Carver signatures are very nice, but what isn't these days? BTW cap and inductors store energy, which is what can allow very large short bursts of power. Quote Link to comment Share on other sites More sharing options...
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